Coverting from 44hz to 48hz with TMPGEnc

I wonder if someone can help i'm trying to convert sound from a movie 44100hz to 480000hz for DVD play back.I've done everything it says in the Guide "How to put VCD on DVD" to the letter.After doing the "Convert the audio into 48kHz" there is no sound there and using AVIcodec to get all the info on the coverted sound file it doesn't pick it up, were the 44hz file is working ok .Any ideas or is there another program to convert the sound to 48hz.
Hope someone can help
Very Noob member
tails...

Well Tmpgenc"s Audio encoder is Pretty low Quality...
Go to this Web Page: http://mitglied.lycos.de/darkav/
And download "Headac3he" and all of the DLL Files and Put all of the Dll Files into the "Headac3he" Folder and use the Encoder to encode the audio to 48000hz MP2 Audio....Cheers